Alfred gifford and isaac seright



@uitrit vfates @anni @ffice ALFRED GIFFORD AND1 ISAAC' .SERIGHn oF MLLRQY, IDIAN'A.

Letters Patent No. 68,975, dated September 17, 1867.

IMPROVED DITGHING MACHINE.

To ALL WHoM 1T MAY CONGERN. y i

Be itknown, that we, ALFRED GIFFORD and ISAAC SERIGHT, of .Milroy, in the county of Rush, and in the State of Indiana, have invented new and usefulQimprovement in Ditching Machines; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had tothe aecompzrtnying` drawings and to the letters of reference marked thereon, making a part of thisfspecifieation. l

In the annexed drawings, A represents a suitable frame having wheels BB. Raised above this frame by small standards c c, is a narrow oblong frame, A", and additionally-braced by rods extending from the frame A. Directly under the frame A' is the adjustable frame G, between which is pivoted atly, the wheel 'C,which.is provided with the knives and shovel for ditching the earth. Upon each side of the wheel are bolted the circular i knives a a, which extend outside of said wheel, so as to leave a suitable gutter'between them and the periphery i of. the wheel. K represents a curved shovel, which is attached to the top 'of the frameG in the rear of. the s wheel C, and lies between the circular knives a e, with its lower end near the ground. This knife can be adjusted either close to or far from the wheel, by means of a small slot iulitsupper part, and is `kept in its place by-a brace, t, extending from the frame to its lower extremity. D representsa metallic shield placed upon the frame r G in the rearof the knives a a upon the wheel C, which is made convex at its top, with its'sidesextendingbelow the side of the frame for carrying therearth of the ditch. b represents the scraper supported byisuitable rods s e, with its end resting `against -the wheel VC, between the knives. This-scraper catches the earth as it is conveyed up the channel by the knife K,`and forcesit over the shield D, whileikecping the'wheel clean at the'saxne` time. It will be observed that the vframe G carrying the wheel C is adjusted by means. of screwsgg at each end, which have cranks d d' at their tops, which lrest upon the top of frame A. These screws pass through small metal bars on the ends of the' adjustable frame G, and carry't-he said frame up or down between the uprights c c at each end. There are nuts on each screw for holding the frame in the position required. E' represents the tongue to which is applied the power. This machine is iirst regulated by the screws, so that-theknives on the wheel may be made to penetrate the earththe required depth. The machine is then ldrawn-and the earth taken up by the "knife K, after being cut by the knives a a, and carried up the 'channel upon the' shield and carried o the sides. p Y

Having thus fully described my invention, whatI claim as new, and desire to secure byLettew Patent, isv The arrangement of the knife K, wheel C with its. circular knives, scraper I), and horizontal adjustable frame regulated by the screws gg, and provided with the plate D, when'` used in the'manner and for the purposes herein specified. i

In testimony that we claim the foregoing we have hereunto set our hands `this lltllday of March, 1867.` ALFRED GIFFRD,

ISAAC SERIGHT. j

"Witness es:

C. S. GWINNUP, MARK C. PEnKINs. 

